# 请在下面补充你的代码
import math
a = (11 - (3 * math.sqrt(3))) / 2
b = (11 - (4 * math.sqrt(3))) / 2
c = (9 - (3 * math.sqrt(3))) / 2 
d = (9 - (4 * math.sqrt(3))) / 2
r = 2
h = 2 - math.sqrt(3)
S = r + (h**2) / r
print(f'a={a:.4f},b={b:.4f},c={c:.4f},d={d:.4f}')
print(f'会圆法计算弧长为{S:.4f}')